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Asked by| 1st Mar, 2013,
02:38: PM

Expert Answer:

The smoke from the incense stick moves up with the hot rising air, when the incense stick is placed a little above the candle.

As this hot air moves up, cold air from nearby area moves in towards the candle. This can be shown by holding the incense stick a little away on one side of the beaker. The smoke will move horizontally and then downwards into the beaker.

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